Modes et Travaux - Les Modèles Simples

Just a quick inspiration post from an old issue of Modes et Travaux:

Love the first two coats on the left! Also the grey, the blue and the red dress. But what's up with that blue blouse? Boob flap? Is it for breastfeeding? Or maybe you can just remove it from the dress to "go from day to night in an instant". Im intrigued.